Compression-molded article having multilayer structure

Details Compression-molded article having multilayer structure Compression-molded article having multilayer structure

1987-02-02

1990-02-27

Ives, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 366, 428412, 428516, 428518, 4284752, 4284958, 4284761, 4284763, 428483, 264249, 264260, 264263, 425145, 426127, B65D 8584, B29C 4308

Patent

active

049045121

ABSTRACT:
A multilayer compression-molded article produced by compression-molding a composite plastic material. The composite plastic material comprises a first synthetic resin and a second synthetic resin in which the first synthetic resin surrounds substantially the entire second synthetic resin. The compression-molded article comprises a first resin layer molded from the first synthetic resin and a second resin layer molded from the second synthetic resin in which the first resin layer surrounds substantially the entire second resin layer. The composite plastic material is obtained by an extrusion apparatus which intermittently extrudes the second synthetic resin via a subsidiary extrusion flow passage into a main extrusion flow passage in which the first synthetic resin flows.

REFERENCES:
patent: 3532779 (1970-10-01), Wienand
patent: 3589975 (1971-06-01), Erb
patent: 4497765 (1985-02-01), Wilde et al.
patent: 4525134 (1985-06-01), McHenry
patent: 4526821 (1985-07-01), McHenry
patent: 4528221 (1985-07-01), Komatsuzaki et al.
patent: 4568261 (1986-02-01), McHenry
patent: 4572856 (1986-02-01), Gembinski
patent: 4663226 (1987-05-01), Vajs et al.

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